Verfahren zum Reparieren von Gasturbinenleitschaufeln aus Nickel- oder Kobaltlegierung durch Hartlöten

摘要

An undersize repair region of a gas turbine engine stationary shroud (60) is repaired (62) with a sufficient mass of a repair material (64). The repair material includes a first fraction of a first powder of a first alloy component, and a second fraction of a second powder of a second alloy component. The first alloy component and the second alloy component have different solidus temperatures. The repair material is placed (66) in the repair region. The repair material and the repair region are heated (68) to melt the repair material but not the repair region, and thereafter the repair material and the repair region are cooled (69) to solidify the repair material. The repaired region, which may be oversize, may then be machined (70) to the correct size.